* {
    margin: 0;
    padding: 0;
}

h3 {
    display: flex;
    justify-content: center;
    margin: 30px auto;
}

.but-box {
    border-radius: 5px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 10px;
}

#box {
    display: flex;
    margin: 5px auto;
    border-radius: 5px;
    border: 1px #ccc solid;
    height: 400px;
    width: 700px;
    overflow-y: auto;
    overflow-x: hidden;
    position: relative;
}

#msg-box {
    width: 480px;
    margin-right: 111px;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
}

#user-box {
    width: 110px;
    overflow-y: auto;
    overflow-x: hidden;
    float: left;
    border-left: 1px #ccc solid;
    height: 100%;
    background-color: #F1F1F1;
}

label {
    display: block;
    margin: 0px;
}

label>span {
    float: left;
    width: 20%;
    text-align: right;
    padding-right: 10px;
    margin-top: 10px;
    color: #888;
}

button {
    background: #E27575;
    border: none;
    padding: 10px 25px 10px 25px;
    color: #FFF;
    box-shadow: 1px 1px 5px #B6B6B6;
    border-radius: 3px;
    text-shadow: 1px 1px 1px #9E3F3F;
    cursor: pointer;
}

input {
    width: 100%;
    height: 30px;
    padding: 2px;
    line-height: 20px;
    outline: none;
    border: solid 1px #CCC;
}

textarea {
    width: 100%;
    height: 150px;
    padding: 12px 20px;
    box-sizing: border-box;
    border: 2px solid #ccc;
    border-radius: 4px;
    background-color: #f8f8f8;
    font-size: 16px;
    resize: none;
}
